Zhang Huiran, assistant to the director of Nephrology Department of the fourth hospital of Hebei Medical University, group leader of vascular access group, deputy chief physician, associate professor, academic part-time: member of Standing Committee of Nephrology branch of Hebei Association of traditional Chinese and Western medicine, member of kidney disease and blood purification Professional Committee of Hebei Association of female doctors, member of vascular access and interventional nephrology Professional Committee of Hebei Association of vascular health and technology Vice chairman of the association, published 9 papers in Chinese core journals, completed a science and technology support project of Hebei Provincial Science and Technology Department, and participated in the compilation of 2 books. He is good at: autogenous arteriovenous fistula, artificial arteriovenous fistula, autogenous vascular transplantation, transposition arteriovenous fistula, PTA under ultrasound / DSA, forgate catheter thrombectomy, high flow internal fistula restriction, aneurysm resection and channel infection treatment, catheterization and Seldinger technique.